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Related Experiment Videos

Are our babies becoming bigger?

E Alberman1

  • 1Department of Environmental and Preventive Medicine, St Bartholomew's Medical College, London.

Journal of the Royal Society of Medicine
|May 1, 1991
PubMed
Summary
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National birthweight distributions show consistent shapes, with recent increases in median weight observed in several countries. Higher birthweights are strongly linked to lower infant mortality and morbidity, highlighting the importance of interventions like reducing parental smoking and improving maternal health.

Area of Science:

  • Public Health
  • Perinatal Epidemiology
  • Biostatistics

Background:

  • Birthweight distributions reflect population-specific biological and social factors.
  • Trends in birthweight can indicate changes in these underlying characteristics.
  • Infant mortality and morbidity show a strong inverse relationship with birthweight.

Purpose of the Study:

  • To demonstrate the consistency in shape of national birthweight distributions.
  • To analyze trends in birthweight and their impact on public health.
  • To underscore the importance of birthweight in relation to infant health outcomes.

Main Methods:

  • Analysis of a contemporary international data set on birthweight distributions.
  • Examination of trends in median birthweight for various countries.

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  • Correlation analysis between birthweight and infant mortality rates.

    • Main Results:

    • Consistent shapes observed across national birthweight distribution curves.
    • Upward shift in distributions and increased median birthweight noted in countries like the US and England/Wales.
    • Sharp decline in infant mortality with increasing birthweight demonstrated.

    Conclusions:

    • Increasing birthweight is crucial for improving public health, especially in underprivileged groups.
    • Interventions such as reducing parental smoking and enhancing maternal health/nutrition can increase birthweight.
    • Sustained increases in birthweight hold potential for significant public health improvements in future generations.